Ignition device



I June 3, 1930. A U 1,761,513

IGNITION DEVICE Filed March 8, 1929 Patented June 3, 193g JAMES LFARTHUR, or ANDERSON, INDIANA, ASSIGNOR r DELCO-REMY CORPORATION,

OF ANDERSON, INDIANA, A CORPORATION OF DELAWARE 'remrroivnnvronApplication filed March 8,

This invention relates to a device for auto--- matically varying thetime of sparking impulses for internal combustion engines.

Automatic ignition controllers which ad just the timing of the sparkingimpulses by the vacuum in the intake pipeof the engine are well known.In such a device, when the throttle isopen, so that a large quantity. offuel miXture is supplied, the vacuum is but slight, and thus theignition controller is slightly operated. When the throttle issubstantially closed, however, the suction of the engine produces acomparatively greater vacuum andthus the ignition .controller isactuated to a'much greater degree, thereby advancing the time ofsparking impulses to a .5 considerable extent.

Inpracticaloperation it is frequently necessary to run the engine idle,that is, substantially or entirely without load. This is preferably doneat as low a speed as possible for purposes of minimizing fuelconsumption and wear on the engine At idle the throttle of the engine issubstantially closed, which is termed the no load position ofthethrottle. Under these conditions thetim'eof sparking impulses shouldbe late, or retarded, for, if said time of sparking impulse is advanced,the engine will not operate slowly. .30

if the suction actuated device which operates the timer or ignitioncontroller isdirectly connected with the engine intake manifold, therebeing no other control provided, during the no load position. of thethrottle,'.or during the idlingof the engine, at whicha high suction isproduced in the'intake manifold, the time of sparking impulse will besubstantially fully advanced, at .which' time, on the contrary the timeof sparking impulse should be substantially retarded, One object of. thepresent invention is to provide an engine with an ignition timer,-

adjusted to retard or advance a suction actuated device. 7

A further object of the present invention is to control the suctionactuated timer adjusting device sothat the timer willbe adj usted toretard the time of sparking impulse position by the engine has a gear 26attached thereto F th aforegoing if; may b Seen th t I shaft '25, saidgear meshing with and driving a pinion 36 attached to flow therethroughin one directio in this 1929. VSerial No. 345,516.

when the engine is idling and the throttle is I substantially at its noload position.

Further objects and advantages of the present invention will be apparentfrom the following description, reference being had to. the accompanyingdrawings, wherein a preferred embodimentof one form of the presentinvention is clearly shown.

In thedrawings: o i Fig. 1 illustrates in diagrammatic form an internalcombustion engine with the invention applied thereto.

F ig.- is a detail sectional View of the solenoid' plunger valve.

Referring to the drawings, the numeral 20 designates the internalcombustion engine having cylinders 21 each of which being provided witha spark plug 22. The engine 20 has anintake manifold 23 in which athrottle valve 24 is provided. The crank shaft 25 of which is in drivingconnect-ion with the gear 27 carried on ashaft which also carries thespiral gear 28. The spiral gear 28 meshes with another gear 29 securedto shaft 30. Shaft 30 drives the rotor 31 of the distributor 32 and thecam 33 of the circuit interrupter ortimer34fif I Another gear 35 isattached to the crank ,of the dynamo or generator 38. The generator isshown diagrammatically, and comprises a field winding 39 connectedwithnbrushes 40 f and l'respectively the brushdl beinga thirdor'regulatin" rush...- Brush 42" of the generator is "o'n efofjthe'mainjb'ruslies and has the'wire 43 attached thereto,jsaid wire beingconnected also withthe cutout relay 44. The cutout relay 44 is ofthe'standard "9 type and is adapted to permit the curren to I ya iinstancethe relay permitsth e c I "nt to flow jfr'oin the generatorbrush i2, w r through the relay, wire 45 into thestorage" battery46,the-other. side of thestorage .bjattery being' grounded. as at 47."Bru'sh j itf of the generator is grounded a sj2I1. t1f 4 8 3. 4 i Thetimer 34 or the ignition; circuit intera rupterasvit is sometimescalled, comprises a contact arm 50 pivotally supported on pin 51 andhavinga rubbing block 52 engageable with the cam 33, a spring 53 urgingthe arm 50 toward the block 33. A contact 54 is carried at the free endof the arm and is adapted to cooperate with the stationary contact 55,which is grounded as at 56. The ignition coil 57 includes windings 58and 59. The primary Winding 58 has its one end connected with the spring53 of the circuit interrupter arm 50 through wire 60, the other endofsaid primary winding being connectable through a switch 61 with thewire which, during operation of the engine is connected to the generator38 or the storage battery 46. One end of the secondary winding 59 isconnected with one end of the primary winding, the other end of thesecondary being connected through the wire 62 with the high tensionterminal 63 of the distributor 32, said high tension terminal beingconneetable in proper sequence by the rotor 31 with the variousterminals leading to the spark plugs of the engine.

The circuit interrupter or timer 34 may be rotated to vary the angularrelation of the rubbing block 52 relative to the cam 33 whereby the timeof sparking impulse is retarded or advanced. The cam 33 operates in thedirection of the arrow shown thereon. If the ignition timer 34 isoperated in the same direction as the arrow, or clockwise, then the timeof sparking impulse will be retarded. Rotating the timer 34counter-clockwise, or in a direction opposite the arrow, will advancethe time of sparking impulse. The timer housinghas an arm, 70 extendingtherefrom to which is secured a spring 71 properly an-' chored, saidspring normally urging the timer 34 clockwise or toward the retardedposition.

The suction actuated timer-adjusting--devieeis shown in the presentinstance as comprising a cylinder 75 having a piston 76 therein which isconnected with the arm 70 through a link 77. The suction chamber of thecylinder 75 is connected with the intake manifold by a conduit 78. Inthis conduit there is provided a valve 79 which is detailedly illus-.trated in Fig. 2. a

Valve 79 comprises a cup-shaped housing 80 having a nipple 81 which hasapassage 82 leading into the interior of the housing. On the inside endof passage 82, or, at the end 1 thereof adjacent the,interior of thehousing 80, a restriction 83 is provided and also a valve-seat 84.Housing 80 receives the solenoid magnet coil 85 insulated atone end bythe insulating disc 86 and having a non-magnetic, tubular core 87. Acover plate 88 is screw-threaded into the open end of the housing 80 tohold the electromagnet winding 85 properly housed therein, said cover'88 having a nipple 89 provided with a longitudinal passage 90 whichleads into the tubular core 87 of the electromagnet winding. 'Withinthis core there is provided a valve 91 having fiat angularly arrangedsides so as to provide space between it and the inner wall of thetubular core 87. One end of the valve 91 is tapered and normally held inengagement with the valve seat 84 by a spring 92 interposed between theend cover member 88 and the valve 91. When in normal position valve 91shuts off communication between the passage 82 and the passage 90.Passage 82, when the valve is connected in the conduit 78, leadsdirectly to the engine manifold 23, while passage 90 leads to thesuction chamber of the cylinder 75.

The opening 93 in the nipple 81 provides a bleeder which permitspressures within the cylinder 75 to return to atmospheric pressure whenvalve 91 closes the passage 83.

When the engine is not operating, the circuit interrupter or ignitiontimer 34 will be maintained in full spark retarding position by thespring 71. hen the engine starts, it will drive the generator 38, saidgenerator providing charging current for the battery 46. Valve 79 willremain closed and thus prevent suction from being exerted upon thepiston 7 (5 of the suction actuated device which time current from thegenerator flowing. through the wire 43 and through the wire 99 whichconnects with the electromagnet coil 85 of switch 79 will cause saidelectromagnet to become energized and to move the valve 91 against theeffect of spring 92 away from the seat 84 and thus the manifold of theengine communicates with the suction chamber of the cylinder 75. Thepiston 76 will now be drawn into the cylinder exerting a pull upon thelink 77 and thus rotating the timer or circuit interrupter housing 34counterclockwise, thereby advancing the time of sparking impulse. If theengine is idling, that is, if the throttle 24 is at its no loadposition, a comparatively high vacuum is provided in the manifold 23which would operate piston 76 to fully advance the timer 34 if no valve79 were provided. However, providing valve 79 keeps conduit 78 closedwhile the engine is idling, for during such idling the engine is notoperating the generator 38 sufopen valve 79. In using this device thetimer 34 cannot be adjusted into its advanced position until the enginehas reached a suflieient speed at which the generator will be drivensufliciently fast to provide voltage to energize electromagnet 83 andthus open the valve 79 j to establish suction upon the timer adjustingmember.

lVhile the form of embodiment of the present invention as hereindisclosed, constitutes a preferred form, it is to be understood thatother forms might be adopted, all coming within the scope of the claimswhich follow.

What is claimedis as follows 1. An ignition system for an internalcombustion engine comprising, in combination, an ignition timer forthe'engine; a dynamo driven by the engine; means cpntrolled by the suctionof the engine for adjusting the,

timer; and dynamo controlled means for conbustion engine comprismgyincombination,-

' trolling the action of the timer adjusting means. v v 1 1 2. Anignition system for an internal com an ignition timer for the engine; adynamo driven by the engine; means controlled by the vacuum produced inthe engine intake for adjusting the timer; means normally shutting offsaid vacuum; and means controlled by the dynamo for rendering the lastmentioned means ineffective.

3. An ignition system for an internal combustion engine having an intakemanifold comprising, in combination, a dynamo driven by the engine; anignition timer; a suction ac tuated device for adjusting said timer; aconduit connecting said device with the intake manifold; and a valve insaid conduit for controlling the suction therethrough in accordance withthe voltage of the dynamo. 4. An ignition system for an internalcombustion engine having anzintake-manifold comprising, in combination,a dynamo driven by'the engine; an ignltlon tlmer'; a suction actuateddevice for adjusting said timer; a

conduit connectingsaid device with the intake manifold; and amagnetically operated valve insaid conduit for controlling the suctiontherethrough in accordance with the voltage of the dynamo.

' 5. An ignition system for an internal combustion engine-having anintake manifold comprising; in combination, a dynamo driven by theengine; an ignition timer; a suction actuated device for adjusting saidtimer; a

- conduit connecting said device with the inin said conduit forcontrolling the suction therethrough in accordance with the voltage ofthe dynamo.

'8. An ignition system for an internal com-' bustion engine having anintake manifold comprising, in combination, a dynamo driven by theengine; an ignition timer; a suction actuated device for adjusting saidtimer; a conduit connecting said device with the in take manifold; and asolenoid plunger valve in the conduit, normally cutting off the suctionthrough said conduit, but adapted to open said conduit when the voltageof the dynamo has reached a proper value.

9. An ignition system for an internal combustion engine having anintakemanifold comprising, in combination, a dynamo driven by theengine; a storage battery; a circuit connection between the dynamoand-storage signature.

. JAMES L. ARTHUR.

take manifold; and a normally closed valve in'said conduit ada ted to beopened when d ynamo reaches a proper value. a

6-. An ignition system for aninternal com-. bustion engine 'having anintake manifold lc)omprising, in combination, a dynamo driven y theactuated device for adjusting said timer; a

engine; an ignitiontimer; asuction conduit connecting said device withthe ini take manifold; a normally closed valve in the conduit;and-magnetic means under the con-- trol of the dynamo, adapted to opensaid valve when the voltage of said dynamohas attained a p'ropervalue.

7. An ignition system for an internal com- I bustion engine having anintake manifold comprising, in combination, a dynamo driven by theengine; an ignition timer; a suction actuated device for adjusting saidtimer; a

' conduit connecting said device with the intake manifold; an solenoid,plunger-valve

